Struct std::future::Pending

1.48.0 · source · [−]

pub struct Pending<T> { /* private fields */ }

Expand description

Creates a future which never resolves, representing a computation that never finishes.

This struct is created by pending(). See its documentation for more.

Trait Implementations

impl<T> Clone for Pending<T>

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fn clone(&self) -> Pending<T>ⓘNotable traits for Pending<T>`impl<T> Future for Pending<T> type Output = T;`

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Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)

1.0.0 · source

Performs copy-assignment from source. Read more

impl<T> Debug for Pending<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

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Formats the value using the given formatter. Read more

impl<T> Future for Pending<T>

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type Output = T

The type of value produced on completion.

fn poll(self: Pin<&mut Pending<T>>, &mut Context<'_>) -> Poll<T>

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Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more

Auto Trait Implementations

impl<T> RefUnwindSafe for Pending<T>

impl<T> Send for Pending<T>

impl<T> Sync for Pending<T>

impl<T> Unpin for Pending<T>

impl<T> UnwindSafe for Pending<T>

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

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Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
T: ?Sized,

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fn borrow(&self) -> &T

const: unstable · source

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

const: unstable · source

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

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fn from(t: T) -> T

const: unstable · source

Returns the argument unchanged.

impl<T, U> Into for T where
U: From<T>,

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fn into(self) -> U

const: unstable · source

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<F> IntoFuture for F where
F: Future,

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type Output = <F as Future>::Output

🔬 This is a nightly-only experimental API. (into_future #67644)

The output that the future will produce on completion.

type IntoFuture = F

🔬 This is a nightly-only experimental API. (into_future #67644)

Which kind of future are we turning this into?

fn into_future(self) -> <F as IntoFuture>::IntoFuture

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🔬 This is a nightly-only experimental API. (into_future #67644)

Creates a future from a value.

impl<T> ToOwned for T where
T: Clone,

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type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

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Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

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🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom for T where
U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

const: unstable · source

Performs the conversion.

impl<T, U> TryInto for T where
U: TryFrom<T>,

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type Error = >::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, >::Error>

const: unstable · source

Performs the conversion.

Struct std::future::Pending

Trait Implementations

impl<T> Clone for Pending<T>

fn clone(&self) -> Pending<T>ⓘNotable traits for Pending<T>impl<T> Future for Pending<T> type Output = T;

fn clone_from(&mut self, source: &Self)

impl<T> Debug for Pending<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

impl<T> Future for Pending<T>

type Output = T

fn poll(self: Pin<&mut Pending<T>>, &mut Context<'_>) -> Poll<T>

Auto Trait Implementations

impl<T> RefUnwindSafe for Pending<T>

impl<T> Send for Pending<T>

impl<T> Sync for Pending<T>

impl<T> Unpin for Pending<T>

impl<T> UnwindSafe for Pending<T>

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<F> IntoFuture for F where F: Future,

type Output = <F as Future>::Output

type IntoFuture = F

fn into_future(self) -> <F as IntoFuture>::IntoFuture

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

fn clone(&self) -> Pending<T>ⓘNotable traits for Pending<T>`impl<T> Future for Pending<T> type Output = T;`

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<F> IntoFuture for F where
F: Future,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,